Publication detail

VYUŽITÍ ELEKTROMAGNETICKÉ EMISE PŘI LOKALIZACI TRHLIN

Original Title

VYUŽITÍ ELEKTROMAGNETICKÉ EMISE PŘI LOKALIZACI TRHLIN

Czech Title

VYUŽITÍ ELEKTROMAGNETICKÉ EMISE PŘI LOKALIZACI TRHLIN

Language

cs

Original Abstract

The cracks can be indicated by electromagnetic (EME) and acoustic (AE) emission when solid, especially non-metallic materials, are mechanically stressed. During the process of the crack generation the electric charges appeared at the faces of the cracks. The electric dipole system is a source of voltage induced on metal electrodes. The recorded electric signal is superposition of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. The electromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. The paper describes the use of AE and EME signals to localize the position of the crack in granite sample.

Czech abstract

The cracks can be indicated by electromagnetic (EME) and acoustic (AE) emission when solid, especially non-metallic materials, are mechanically stressed. During the process of the crack generation the electric charges appeared at the faces of the cracks. The electric dipole system is a source of voltage induced on metal electrodes. The recorded electric signal is superposition of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. The electromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. The paper describes the use of AE and EME signals to localize the position of the crack in granite sample.

BibTex


@inproceedings{BUT16341,
  author="Petr {Sedlák} and Jiří {Majzner} and Josef {Šikula} and Tomáš {Lokajíček}",
  title="VYUŽITÍ ELEKTROMAGNETICKÉ EMISE PŘI LOKALIZACI TRHLIN",
  annote="The cracks can be indicated by electromagnetic (EME) and acoustic (AE) emission when solid, especially non-metallic materials, are mechanically stressed. During the process of the crack generation the electric charges appeared at the faces of the cracks. The electric dipole system is a source of voltage induced on metal electrodes. The recorded electric signal is superposition of crack walls self vibration given by crack length and vibration due to an ultrasonic wave given by sample dimension. 
The electromagnetic signal precedes the acoustic emission response and time delay corresponds to the difference of propagation velocities of sound and electromagnetic radiation in the sample. The paper describes the use of AE and EME signals to localize the position of the crack in granite sample.
",
  address="Czech Society for Nondestructive Testing",
  booktitle="Defektoskopie 2005 - sborník příspěvků",
  chapter="16341",
  institution="Czech Society for Nondestructive Testing",
  year="2005",
  month="january",
  pages="207",
  publisher="Czech Society for Nondestructive Testing",
  type="conference paper"
}